I was going to suggest those two lakes, but wasn't sure if they were public access lakes.

Not being familiar with the area, best thing I can tell you to do is pull up Google Maps and type in Erlanger KY ... then zoom out gradually until you see the blue areas denoting water .... then zoom in on them to find out their names & locations.

How far you're willing to travel is another factor you need to take into consideration !! And doing a search for each one, to find out if they are public waters and if they have much in the way of open bank access would be a good idea.

Boltz Lake, Williamstown Lake, & Corinth Lake are South of you ... just off I-75 (about halfway from Erlanger & Lexington) ... but, again I don't know if these lakes have bank access, as the land around them has housing developments. And there's Bullock Pen Lake, that's West of Crittenden, KY ( on I-75 and closer than the other three I mentioned). But, again ... there's housing around it, too.